From patchwork Fri Oct 13 09:02:00 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dongdong Liu X-Patchwork-Id: 825291 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3yD1KQ3YNdz9sPr for ; Fri, 13 Oct 2017 19:36:42 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757008AbdJMIgk (ORCPT ); Fri, 13 Oct 2017 04:36:40 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:8025 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756606AbdJMIgi (ORCPT ); Fri, 13 Oct 2017 04:36:38 -0400 Received: from 172.30.72.58 (EHLO DGGEMS402-HUB.china.huawei.com) ([172.30.72.58]) by dggrg05-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id DJB12752; Fri, 13 Oct 2017 16:36:31 +0800 (CST) Received: from linux-ioko.site (10.71.200.31) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server id 14.3.301.0; Fri, 13 Oct 2017 16:33:54 +0800 From: Dongdong Liu To: CC: , , , Dongdong Liu Subject: [RFC PATCH] PCI/portdrv: Fix switch devctrl error report enable. Date: Fri, 13 Oct 2017 17:02:00 +0800 Message-ID: <1507885320-122365-1-git-send-email-liudongdong3@huawei.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-Originating-IP: [10.71.200.31] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090201.59E07B0F.0064, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 71c3a50ce38e9344cf29beb4f0258d95 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Current code has a bug, switch upstream/downstream port error report is disabled. DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- -[0000:00]-+-00.0-[01]-- \-08.0-[02-07]----00.0-[03-07]--+-04.0-[04]-- +-05.0-[05]-- +-08.0-[06]-- \-09.0-[07]-- portdrv_pci.c pcie_portdrv_probe --->pcie_port_device_register --->get_port_device_capability --->pci_disable_pcie_error_reporting aerdrv.c aer_probe --->aer_enable_rootport --->set_downstream_devices_error_reporting But current code RP AER driver probe is before switch UP/DP portdrv probe. This is a RFC PATCH for discussing. Signed-off-by: Dongdong Liu --- drivers/pci/pcie/portdrv_core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 313a21d..6bb89ce 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -261,7 +261,9 @@ static int get_port_device_capability(struct pci_dev *dev) * Disable AER on this port in case it's been enabled by the * BIOS (the AER service driver will enable it when necessary). */ - pci_disable_pcie_error_reporting(dev); + if((pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM) && + (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)) + pci_disable_pcie_error_reporting(dev); } /* VC support */ if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_VC))